Thermogravimetric analysis in nitrogen ambient of copper/titania selective catalytic reduction catalyst poisoned with calcium

Özarslan H., Karaçor B.

3th International Siirt Scientific Research Congress, Siirt, Türkiye, 18 - 19 Kasım 2022, ss.586-595

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Basıldığı Şehir: Siirt
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.586-595
  • Çukurova Üniversitesi Adresli: Evet

Özet

The selective catalytic reduction (SCR) system is an exhaust emission control system used to reduce nitrogen oxide (NOx) emissions in diesel engines with the help of catalysts and reductants. In this study, copper (II) chloride (CuCl2), titanium dioxide (TiO2), and calcium hydroxide (Ca (OH)2) nanoparticles were used to produce powder catalysts. While copper was used as an active metal particle, titanium dioxide was preferred as a wash coat material. Calcium is known as a critical poison that causes the deactivation of the SCR catalyst. The purpose of this study is effects of calcium (Ca) addition and calcination temperature on thermogravimetric analysis (TGA) of copper-based catalyst. TGA analysis of the catalyst samples were conducted by heating at a rate of 20 ºC/min from 25 ºC to 1100 ºC temperature at nitrogen ambient, before and after calcination process. In view of thermogravimetric analysis, the weight loss of samples was determined. The analysis results show that the addition of Ca nanoparticles to the catalyst raises the weight loss approximately two times.